<template>
    <div>
        <!-- 面包屑导航区域 -->
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item  :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>用户管理</el-breadcrumb-item>
            <el-breadcrumb-item>用户列表</el-breadcrumb-item>
        </el-breadcrumb>

        <!-- 卡片视图区域 搜索与添加区域-->
        <el-card class="box-card">
            <el-row :gutter="20">
                <el-col :span="8">
                    <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
                       <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
                    </el-input>
                </el-col>
                <el-col :span="4">
                    <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
                </el-col>
            </el-row>

            <!-- 用户列表区域 -->
            <el-table :data="userlist" border stripe>
                <el-table-column type="index" label="序号"></el-table-column>
                <el-table-column label="姓名" prop="username"></el-table-column>
                <el-table-column label="邮箱" prop="email"></el-table-column>
                <el-table-column label="电话" prop="mobile"></el-table-column>
                <el-table-column label="角色" prop="role_name"></el-table-column>
                <el-table-column label="状态">
                    <template slot-scope="scope">
                          <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)">
                          </el-switch>
                    </template>
                </el-table-column>
                <el-table-column label="操作" width="180px">
                    <template slot-scope="scope">
                        <!-- 修改 -->
                        <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
                        <!-- 删除 -->
                        <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
                        <!-- 分配角色 -->
                        <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
                            <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
                        </el-tooltip>
                    </template>
                </el-table-column>
            </el-table>

            <!-- 分页区域 -->
            <el-pagination
                @size-change="handleSizeChange"
                @current-change="handleCurrentChange"
                :current-page="queryInfo.pagenum"
                :page-sizes="[1, 2, 5, 10]"
                :page-size="queryInfo.pagesize"
                layout="total, sizes, prev, pager, next, jumper"
                :total="total">
            </el-pagination>
        </el-card>

        <!-- 添加用户的对话框 -->
        <el-dialog
            title="添加用户"
            :visible.sync="addDialogVisible"
            width="50%"
            @close="addDialogClosed"
            >
            <!-- 内容主体区域 -->
            <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
                <el-form-item label="用户名" prop="username">
                    <el-input v-model="addForm.username"></el-input>
                </el-form-item>
                <el-form-item label="密码" prop="password">
                    <el-input v-model="addForm.password"></el-input>
                </el-form-item>
                <el-form-item label="邮箱" prop="email">
                    <el-input v-model="addForm.email"></el-input>
                </el-form-item>
                <el-form-item label="手机" prop="mobile">
                    <el-input v-model="addForm.mobile"></el-input>
                </el-form-item>
            </el-form>
            <!-- 底部区域 -->
            <span slot="footer" class="dialog-footer">
                <el-button @click="addDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="addUser">确 定</el-button>
            </span>
        </el-dialog>

        <!-- 修改用户对话框 -->
        <el-dialog
            title="修改用户"
            :visible.sync="editDialogVisible"
            width="50%"
            @close="editDialogClosed">
            <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
                <el-form-item label="用户名">
                    <el-input v-model="editForm.username" disabled></el-input>
                </el-form-item>
                <el-form-item label="邮箱" prop="email">
                    <el-input v-model="editForm.email"></el-input>
                </el-form-item>
                <el-form-item label="手机" prop="mobile">
                    <el-input v-model="editForm.mobile"></el-input>
                </el-form-item>
            </el-form>
            <span slot="footer" class="dialog-footer">
                <el-button @click="editDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="editUserInfo">确 定</el-button>
            </span>
        </el-dialog>

        <!-- 分配角色的对话框 -->
        <el-dialog
            title="分配角色"
            :visible.sync="setRoleDialogVisible"
            width="50%"
            @close="setRoleDialogClosed">
            <div>
                <p>当前的用户：{{userInfo.username}}</p>
                <p>当前的角色：{{userInfo.role_name}}</p>
                <p>分配新角色：
                    <el-select v-model="selectedRoleId" placeholder="请选择">
                        <el-option
                        v-for="item in rolesList"
                        :key="item.id"
                        :label="item.roleName"
                        :value="item.id">
                        </el-option>
                    </el-select>
                </p>
            </div>
            <span slot="footer" class="dialog-footer">
                <el-button @click="setRoleDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
            </span>
        </el-dialog>
    </div>
</template>
<script>
export default {
    data() {
        // 验证邮箱的规则
        var checkEmail = (rule, value, cb) => {
            // 验证邮箱的正则表达式
           const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/

           // 合法的邮箱
           if (regEmail.test(value)) {
               return cb()
           }
           cb(new Error('请输入合法的邮箱'))
        }
        // 验证手机号的规则
        var checkMobile = (rule, value, cb) => {
            const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/

            if (regMobile.test(value)) {
                return cb()
            }
            cb(new Error('请输入合法的手机'))
        }

       return {
            // 获取用户列表的参数对象
           queryInfo: {
              query: '',
              // 当前的页数
              pagenum: 1,
              // 当前每页显示多少条数据
              pagesize: 2
           },
           userlist: [],
           total: 0,
           // 控制添加用户对话框的显示与隐藏
           addDialogVisible: false,
           // 添加用户的表单数据
           addForm: {
               username: '',
               password: '',
               email: '',
               mobile: ''
           },
           // 添加表单的验证规则对象
           addFormRules: {
                username: [
                  { required: true, message: '请输入用户名', trigger: 'blur' },
                  { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
                ],
                password: [
                    { required: true, message: '请输入密码', trigger: 'blur' },
                    { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
                ],
                email: [
                    { required: true, message: '请输入邮箱', trigger: 'blur' },
                    { validator: checkEmail, trigger: 'blur' }
                ],
                mobile: [
                    { required: true, message: '请输入手机', trigger: 'blur' },
                    { validator: checkMobile, trigger: 'blur' }
                ]
           },
           // 控制编辑用户对话框的显示与隐藏
           editDialogVisible: false,
           // 查询到的用户信息对象
           editForm: {
               email: '',
               mobile: ''
           },
           // 修改表单的验证规则对象
           editFormRules: {
               email: [
                   { required: true, message: '请输入邮箱', trigger: 'blur' },
                    { validator: checkEmail, trigger: 'blur' }
               ],
               mobile: [
                    { required: true, message: '请输入手机', trigger: 'blur' },
                    { validator: checkMobile, trigger: 'blur' }
                ]
           },
           // 控制分配角色对话框的显示和隐藏
           setRoleDialogVisible: false,
           // 需要被分配角色的用户信息
           userInfo: {},
           // 所有角色的数据列表
           rolesList: [],
           // 已选中的id值
           selectedRoleId: ''
       }
    },
    created() {
      this.getUserList()
    },
    methods: {
        async getUserList() {
            const { data: res } = await this.$http.get('users', {
               params: this.queryInfo
            })
            if (res.meta.status !== 200) {
                return this.$message.error('用户获取列表失败')
            }
            this.userlist = res.data.users
            this.total = res.data.total
        },
        // 监听 pagesize 改变的事件
        handleSizeChange(newSize) {
            // console.log(newSize) 监听 pagesize 改变的事件
            this.queryInfo.pagesize = newSize
            this.getUserList()
        },
        // 监听 页码值 改变的事件
        handleCurrentChange(newPage) {
            // console.log(newPage)
            this.queryInfo.pagenum = newPage
            this.getUserList()
        },
        // 监听 switch 开关状态的改变
        async userStateChanged(userInfo) {
            // console.log(userInfo)
            const { data: res } = await this.$http.put(`users/${userInfo.id}/state/${userInfo.mg_state}`)
            if (res.meta.status !== 200) {
                userInfo.mg_state = !userInfo.mg_state
                return this.$message.error('更新用户状态失败')
            }
            this.$message.success('更新用户状态成功')
        },
        // 监听添加用户对话框的关闭事件
        addDialogClosed() {
            this.$refs.addFormRef.resetFields()
        },
        // 点击按钮，添加新用户
        addUser() {
            this.$refs.addFormRef.validate(async valid => {
                if (!valid) return
                const { data: res } = await this.$http.post('users', this.addForm)
                if (res.meta.status !== 201) {
                  this.$message.error('用户创建失败')
                }
                 this.$message.success('用户创建成功')
                 this.addDialogVisible = false
                 this.getUserList()
            })
        },
        // 展示编辑用户的对话框
        async showEditDialog(id) {
            // console.log(id)
            const { data: res } = await this.$http.get('users/' + id)
            console.log(res)
            if (res.meta.status !== 200) {
               return this.$message.error('查询失败')
            }
            this.editForm = res.data
            this.editDialogVisible = true
        },
        // 监听修改用户对话框的关闭事件
        editDialogClosed() {
            this.$refs.editFormRef.resetFields()
        },
        // 修改用户信息并提交
        editUserInfo() {
            this.$refs.editFormRef.validate(async valid => {
               if (!valid) return
               // 发起修改用户信息数据请求
               const { data: res } = await this.$http.put('users/' + this.editForm.id,
               {
                   email: this.editForm.email,
                   mobile: this.editForm.mobile
               }
               )
               if (res.meta.status !== 200) {
                   return this.$message.error('更新用户信息失败')
               }

               // 关闭对话框
               this.editDialogVisible = false
               // 刷新数据列表
               this.getUserList()
               // 提示修改成功
               this.$message.success('更新用户信息成功')
            })
        },
        // 根据Id删除对应的用户信息
        async removeUserById(id) {
            // console.log(id)
            // 弹框询问用户是否删除数据
            const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning'
              }
            ).catch(err => err)
            // 如果用户确认删除，则返回值字符串 comfirm
            // 如果用户取消删除，则返回值字符串 cancel
            // console.log(confirmResult)
            // 有问题
            // if (confirmResult !== 'comfirm') {
            //     return this.$message.info('已取消删除')
            // }
            if (confirmResult !== 'confirm') {
                return this.$message.info('已取消删除')
            }
            // console.log('已删除')

            const { data: res } = await this.$http.delete('users/' + id)

            if (res.meta.status !== 200) {
                return this.$message.error('删除用户失败')
            }
            this.$message.success('删除用户成功')
            this.getUserList()
        },
        // 展示分配角色的对话框
        async setRole(userInfo) {
            this.userInfo = userInfo
            // 在展示对话框之前，获取所有角色的列表
            const { data: res } = await this.$http.get('roles')
            if (res.meta.status !== 200) {
                return this.$message.error('获取角色列表失败')
            }
            this.$message.success('获取角色列表成功')
            this.rolesList = res.data
            this.setRoleDialogVisible = true
        },
        // 点击按钮，分配角色
        async saveRoleInfo() {
            if (!this.selectedRoleId) {
                return this.$message.error('请选择要分配的角色')
            }
            const { data: res } = await this.$http.put(`users/${this.userInfo.id}/role`, { rid: this.selectedRoleId })
            if (res.meta.status !== 200) {
                return this.$message.error('设置角色失败')
            }
            this.$message.success('设置角色成功')
            this.getUserList()
            this.setRoleDialogVisible = false
        },
        // 监听分配角色对话框的关闭事件
        setRoleDialogClosed() {
            this.selectedRoleId = ''
            this.userInfo = {}
        }
    }
}
</script>

<style lang="less" scoped>
</style>
